imerenkov imerenkov

22-05-2020
Mathematics

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Аноним Аноним

22-05-2020

Answer:

the answer is b

Step-by-step explanation:

7x^2+6x-9x-6x^2+15

combine like terms

7x^2-6x^2= x^2

6x-9x= -3x

x^2-3x+15

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